To understand the meaning and possible applications of the work-energy theorem. Find the net work W done on the particle by the external forces during the particle's motion.

the old price per ounce is c/4.

the new price per ounce is c/3.6.

the ratio of the old price to the new one is

(c/4)/(c/3.6) = (c/c)×(3.6/4) = 0.9 . . = 9/10 . . "nine tenths" in either form

weight is the answer i just took the test